Perimeter Institute for Theoretical Physics. Das Perimeter Institute for Theoretical Physics (PI) hat seinen Sitz in Waterloo (Ontario) in Kanada. Es ist ein unabhängiges Forschungsinstitut, das sich mit den Grundlagen der Theoretischen Physik befasst. Außerdem veranstaltet es jeden Sommer ein auf Physik ausgerichtetes Sommerlager für Schüler.
The theoretical physics of condensed matter shares important concepts and methods with that of particle physics and nuclear physics. A variety of topics in physics such as crystallography, metallurgy, elasticity, magnetism, etc., were treated as distinct areas until the 1940s, when they were grouped together as solid-state physics.
Richard Phillips Feynman (/ ˈ f aɪ n m ə n /; May 11, 1918 – February 15, 1988) was an American theoretical physicist, known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of the superfluidity of supercooled liquid helium, as well as his work in particle physics for which he proposed the parton model.
www.pitp.ca. Perimeter Institute for Theoretical Physics ( PI, Perimeter, PITP) is an independent research centre in foundational theoretical physics located in Waterloo, Ontario, Canada. It was founded in 1999.  The institute's founding and major benefactor is Canadian entrepreneur and philanthropist Mike Lazaridis.
Theoretical physics attempts to understand the natural world by making a model of reality, used for rationalizing, explaining, and predicting physical phenomena in what are called " physical theories ." There are three types of theories in physics: mainstream theories, proposed theories and fringe theories.
Scientists. v. t. e. Particle physics or high-energy physics is the study of fundamental particles and forces that constitute matter and radiation. The field also studies combinations of elementary particles up to the scale of protons and neutrons, while the study of combination of protons and neutrons is called nuclear physics .
J. Robert Oppenheimer (born Julius Robert Oppenheimer; / ˈɒpənhaɪmər / OP-ən-hy-mər; April 22, 1904 – February 18, 1967) was an American theoretical physicist. He was director of the Manhattan Project 's Los Alamos Laboratory during World War II and is often called the "father of the atomic bomb ." Born in New York City, Oppenheimer ...